Gillian had 120 pink stamps and 60 black stamps. Gillian gave away 25% of her pink stamps and 50% of her black stamps. What percentage of her stamps left was black?
Percentage of pink stamps left
= 100% - 25%
= 75%
Number of pink stamps left
= 75% x 120
= 75100 x 120
= 90
Percentage of black stamps left
= 100% - 50%
= 50%
Number of black stamps left
= 50% x 60
=
50100 x 60
= 30
Total number of stamps left
= 90 + 30
= 120
Percentage of stamps left that are black
=
30120 x 100%
= 25%
Answer(s): 25%
